Product Overview
The SEHWA STC3M Series Chip Trimmer Capacitor is designed for precise capacitance adjustment in electronic circuits. Manufactured by SEHWA Co., Ltd., these ceramic trimmer capacitors offer a range of capacitance values and temperature coefficients, making them suitable for various applications requiring stable and reliable performance. They are available in tape and reel or bulk packaging for efficient integration into manufacturing processes.
Product Attributes
- Brand: SEHWA
- Product Type: Chip Trimmer Capacitor
- Series: STC3M Series
- Dielectric Material: Ceramic
- Temperature Coefficients: NPO, N600, N750, N1300
- Packaging Options: 1,000 pcs / reel (12mm Tape & Reel), Bulk Type
Technical Specifications
| Model | Capacitance (pF Max) | Capacitance (pF Min) | Temperature Coefficient (ppm/) | Capacitance Drift (Max) | Q Value (at 1 MHz, C max) | Insulation Resistance (Min) | DC Rated Voltage (VDC) | DC Withstanding Voltage (VDC) | Rotation Torque (gf.cm) |
|---|---|---|---|---|---|---|---|---|---|
| STC3MA03 (3pF) | 3.0 +50 -0 % | 1.5 max | NP0300 | 2% | 300 Min | 104 Min | 100 | 220 | 15 ~ 72 |
| STC3MA06 (6pF) | 6.0 +50 -0 % | 2.0 max | NP0200 | 2% | 500 Min | 104 Min | 100 | 220 | 15 ~ 72 |
| STC3MB10 (10pF) | 10.0 +50 -0 % | 3.0 max | N750400 | 2% | 600 Min | 104 Min | 100 | 220 | 15 ~ 72 |
| STC3MD20 (20pF) | 20.0 +50 -0 % | 5.8 max | N1300400 | 3% | 250 Min | 104 Min | 100 | 220 | 15 ~ 72 |
| STC3ME30 (30pF) | 28.5 +50 -0 % | 8.0 max | N1300400 | 3% | 250 Min | 104 Min | 100 | 220 | 15 ~ 72 |
Environmental Specifications
| Test | Model | Capacitance Change (%) | Insulation Resistance (Min) | Q Value (Min) |
|---|---|---|---|---|
| High Temp Test (60, 48h) | 3pF | 2% | 104 | 300 |
| 6pF | 2% | 104 | 300 | |
| 10pF | 3% | 104 | 500 | |
| 20pF | 3% | 104 | 200 | |
| 30pF | 5% | 104 | 200 | |
| Humidity Heat Test (40, 90~95% RH, 48h) | 3pF | 2% | 104 | 400 |
| 6pF | 2% | 104 | 400 | |
| 10pF | 3% | 104 | 500 | |
| 20pF | 3% | 104 | 500 | |
| 30pF | 5% | 104 | 300 | |
| Low Temp Test (-25, 48h) | 3pF | 2% | 104 | 300 |
| 6pF | 2% | 104 | 300 | |
| 10pF | 3% | 104 | 500 | |
| 20pF | 5% | 104 | 200 | |
| 30pF | 5% | 104 | 200 | |
| Cleaning Test (Toluene) | 3pF | 2% | 104 | 300 |
| 6pF | 2% | 104 | 300 | |
| 10pF | 3% | 104 | 500 | |
| 20pF | 3% | 104 | 200 | |
| 30pF | 5% | 104 | 200 | |
| Submersion Test (Water) | 3pF | 2% | 104 | 400 |
| 6pF | 2% | 104 | 500 | |
| 10pF | 3% | 104 | 500 | |
| 20pF | 3% | 104 | 200 | |
| 30pF | 5% | 104 | 200 |
Cautions
Adjustment: Maximum screwdriver pressure should be less than 100 gf. Use recommended screwdrivers (e.g., VESSEL 9000) or screwdrivers with tips that do not damage internal insulated elements. High pressure can lead to setting drift or internal damage.
Soldering: Use the recommended solder profile. Excessive solder can cause bridging or flux invasion, degrading characteristics. Do not touch the trimmer capacitor body or terminals directly with a soldering iron, as this may cause damage. Avoid flow-soldering (dipping soldering) as it may penetrate the capacitor. Ensure proper mounting alignment if SEHWA's recommended land pattern is not used. Cool down to room temperature for at least 4 hours after reflow soldering to prevent capacitance drift.
Storage: Recommended usage within 6 months of delivery. Store between -10~40 and 30~70% RH. Avoid corrosive conditions, direct sunlight, or dewy environments. Do not open packages until just prior to use.
Others: Do not warp or bend the PCB to prevent breakage. Do not use locking paint or other substances to secure the rotor position. Test and make prototype products before assembly to ensure functionality.
2410121707_SEHWA-STC3MA03-T1_C22468119.pdf
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